The humans knew that one day the aliens would come back. And they know that the only way you can really travel in space is through wormholes. So for the aliens, it could take two or three weeks, but for us that’s 20 or 25 years.

It’s a changed world. It’s like parallel history. [Humans] have harnessed all this alien technology. We don’t know how to duplicate it because it’s organically-grown technology, but we know how to take an antigravity device and put it in a human airplane. It’s still some of the same characters, but also new younger characters; it’s a little bit like the sons take over. The first one ends on a little success, but only enough to give the humans hope. And then in the second one they free themselves again [from the aliens].

Regarding some of the same characters from Independence Day, it's stated that Will Smith is not confirmed for the movie, but Bill Pullman is, and that the movie will focus on the new generation of characters with Will Smith's character's stepson.

Independence Day came out in 1996 raking in over $300 million.

Roland Emmerichwill also be back blowing up the White House in White House Down.